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Colorbook
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Color Information

Blue

Complete color analysis with professional format conversions, accessibility metrics, and harmonious color combinations for your design projects.

HEX Format
#0451B4
RGB Values
4, 81, 180
HSL Values
214°, 96%, 36%
CMYK Values
98%, 55%, 0%, 29%

Color Variations & Tints

  • #0A72FA

    Lightness: 51%

  • #0566E6

    Lightness: 46%

  • #045BCD

    Lightness: 41%

  • #0451B4

    Lightness: 36%

    Current color

  • #03459B

    Lightness: 31%

  • #033A82

    Lightness: 26%

  • #022F69

    Lightness: 21%

Accessibility

White Text
7.4
PASS
Black Text
2.8
FAIL
WCAG AA
PASS
WCAG AAA
PASS

Accessibility Guide

Contrast Ratios
Higher values (4.5+) ensure better readability for users with visual impairments.
WCAG AA Standard
Minimum requirement: 4.5:1 contrast for normal text, 3:1 for large text.
WCAG AAA Standard
Enhanced level: 7:1 contrast for normal text, 4.5:1 for large text.

Color Harmonies

  • Complementary

    Colors opposite on the color wheel, creating high contrast

  • Triadic

    Three evenly spaced colors forming a triangle on the color wheel

  • Analogous

    Adjacent colors on the color wheel, creating harmony and unity

Be picky and fine tune your color: colors very near to #0451B4

Systematic progression of extremely similar colors. Each color represents a precise step in lightness variation.

Current: #0451B4

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